US2711365A - Abrasive articles and method of making - Google Patents

Abrasive articles and method of making Download PDF

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Publication number
US2711365A
US2711365A US252792A US25279251A US2711365A US 2711365 A US2711365 A US 2711365A US 252792 A US252792 A US 252792A US 25279251 A US25279251 A US 25279251A US 2711365 A US2711365 A US 2711365A
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US
United States
Prior art keywords
fibers
ester
product
resin
cellulose
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US252792A
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English (en)
Inventor
James E Price
Groves Kenneth Deane
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akzo Nobel UK PLC
Original Assignee
American Viscose Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL81798D priority Critical patent/NL81798C/xx
Application filed by American Viscose Corp filed Critical American Viscose Corp
Priority to US252792A priority patent/US2711365A/en
Priority to US306061A priority patent/US2781326A/en
Priority to GB25854/52A priority patent/GB732257A/en
Priority to FR1071151D priority patent/FR1071151A/fr
Priority to DEA16726A priority patent/DE1085664B/de
Application granted granted Critical
Publication of US2711365A publication Critical patent/US2711365A/en
Anticipated expiration legal-status Critical
Assigned to KELLOGG CREDIT CORPORATION A DE CORP. reassignment KELLOGG CREDIT CORPORATION A DE CORP. AGREEMENT WHEREBY SAID HELLER AND RAYONIER RELEASES ALL MORTGAGES AND SECURITY INTERESTS HELD BY AVTEX ON APRIL 28, 1978, AND JAN. 11, 1979, RESPECTIVELY AND ASSIGNS ITS ENTIRE INTEREST IN SAID MORT-AGAGE AGREEMENT TO ASSIGNEE (SEE RECORD FOR DETAILS) Assignors: AVTEX FIBERS INC., A NY CORP., ITT RAYONIER INCORPORATED, A DE CORP., WALTER E. HELLER & COMPANY, INC. A NY CORP.
Assigned to WALTER E. HELLER & COMPANY, INC., A CORP. OF DEL. reassignment WALTER E. HELLER & COMPANY, INC., A CORP. OF DEL. AGREEMENT WHEREBY AETNA RELEASES AVTEX FROM ALL MORTAGES AND SECURITY INTERESTS IN SAID INVENTIONS AS OF JANUARY 11,1979, AND ASSIGNS TO ASSIGNEE THE ENTIRE INTEREST IN SAID MORTAGE AGREEMENT TO ASSIGNEE (SEE RECORDS FOR DETAILS). Assignors: AETNA BUSINESS CREDIT, INC., A CORP. OF N.Y., AVTEX FIBERS, INC, A CORP. OF NY, KELLOGG CREDIT CORP., A CORP. OF DEL.
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
    • B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
    • B24D3/344—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent the bonding agent being organic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
    • C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen

Definitions

  • This invention relates to fibrous structures comprising non-fibrous particulate filling materials andfibers at least 50% by weight of whichare potentially adhesive cotton Wood fibers, cotton, flax,liute, kapok, wool, hair and silk in their natural non-activatablecondition, or it may containartificial or s'yntheticfibers' including cellulosic fibers such as, for example, cellulose hydrate, cellulose esters and mixed cellulose esterswhich are non-thermoplastic and'not rendered tack'yunder the conditions used to bind thefiller particles and ester-coated cotton fibers together, celluloseethers, mixed cellulose ester ethe rs, mixed cellulose ethers, cellulose hydroxy-alkyl ethers, cellulose ,car-;
  • boxyalkyl ethers cellulose ether-xanthates, fcellulose Xantho-fatty acids, cell'ulose thiourethanes; natural and synthetic rubberand derivatives thereof; fibers made of alg'inic acid, gelatine, casein; and mineral fibers such as those of spun glass, asbestos, mineral wool, and the like;
  • the products are made by commingling fibers at least by weight of which are the cotton fibers carrying the cellulose ester and particulate non-fibrous fillingmaterials to obtain an intimate mixture of the fibers and lose ester adhering to the surfaces of the cottonr lfibers, activating the ester to softened or tacky conditionfto bind fibers in the product, anddeactivating'the ester to set the fibers firmly in the bonded relation, the filler particles being held securely in the product 'by'.the bonded fibers.
  • the final product may consist wholly of the cotton fibers carrying the cellulose ester and'the filler particles, or it may also contain a small proportion of fibers which filter media are not themselves activatable to the tacky condition'and which are not coated or impregnated with an activatable material, as well as other types of fibers 'which are activatable to tacky condition, i. .e., fibers which are potentially adhesive but different from the cotton fibers carrying the'ester.
  • the products may contain a given proportion, that is, up to 50% based on the total weight of the fibers in the product, of natural fibers, such as, for example,
  • the ting, cutting, or shreddingInon-fibrous films-such as celloup to 50% basedon'the total weight of the fibers inithe product may be composed of a wide variety of materials and may comprise anytr'naterial-capable of being formed into fibers which, have an inherent tackiness under con ditionssuch that those fibers and-the cellulose ester adhered to the 'surfacesof the 'cot-ton fibers arejrenderedfl tacky without damage'rto'the cotton-fibers or" to any other non-adhesive fibers present, and whieh areno-ttacky at room temperature.
  • Examples of the potentially adhesive fibers which ma be presentiare-thermoplasticfibers such as thoseoftcellulose acetateor, othercellulos'e esters and '7 others, or r'nfixed cellulose esterss'u'ch'as cellulose "acetatepropion'atejor cellulose 'acetate butyrate, t-in plasticized condition; also. resins as, for example, cheap natural resins such as shellac, dammar, copal and the like, and synthetic resins" which are either permanently thermoplastic or 1 thermo'setting butinthe thermoplastic state at theatime they'a16.
  • the'tic resins styrene, sterols, aldehydes,"furfural, ke'tones, urea, thio-1 urea;- phenol-aldehyde resins. either uhmodified or modi-f tied with oils; urea-aldehyde resins;'sulfonamide-aldehyde resins; polyhydric alcohol-polybasic acid resins; drying oil-modified alkyd resins; resins fgn'med by the polymerizar tio'n'of "acrylic acidor itshomologues or derivatives; sul
  • furolefine'resins resins-formed from dicarboxylic acids anddiaminesc (nylon type) or fromldicarboxylic acids andpolyethylene glycolst-Dacron type); synthetic rubparticles in which the latter are incontact with the ccllubers and rubber substitutes,1herein called resins, such olefinc polysulfide s, fisobutylene polymers,
  • the fibers and particles may be bonded together solely by activation of the cellulose ester on the surfaces of the cotton fibers and of any fibers present in the product which are per se potentially activatable to the tacky or adhesive condition, or the product may also comprise a nonfibrous thermosetting resin which is applied to the mixed fibers and filler particles in liquid condition, and brought to the hardened, thermoset condition in situ in the product.
  • a nonfibrous thermosetting resin which is applied to the mixed fibers and filler particles in liquid condition, and brought to the hardened, thermoset condition in situ in the product.
  • Any of the thermosetting resins commonly used in the molding art may be used but preferably the thermosetting resin is a melamine-formaldehyde resin or a phenol-formaldehyde resin.
  • thermosetting resin will depend on the type of fibers mixed with the cellulose ester-treated cotton fibers, if such other fibers are used, since some of the thermosetting resins are more satisfactory for use with certain types of potentially adhesive fibers than with others.
  • a potentially adhesive vinyl resin such as fibers of vinyl chloride-vinyl acetate copolymers
  • the use of the melamine-formaldehyde or phenol-formaldehyde resin in conjunction with the cotton fibers having the cellulose ester coating or carrying adhered particles of the cellulose ester on their surfaces improves the strength of the product by reinforcing the bonds between the fibers and between the fibers and filler particles.
  • non-fibrous filler for admixture with the fibers will be determined entirely by the purpose for which the final product is intended since the filler will, of course, have a definite effect on the physical properties of the final product.
  • the filler may serve simply to fill the interstitial spaces between fibers in the product, thereby increasing the density of the product and also increasing its mechanical and impact strength; or it may also improve or modify the properties of the product in other respects, for instance the conductivity of the product for heat or electricity; its resistance to shock or chemical reagents; its abrasiveness, etc.
  • the filler may be a pigment, such as chromium oxide, titanium oxide, iron oxide pigments, barium sulfate, carbon black, graphite, zinc oxide, etc.
  • the filler may be a special absorbent substance such as activated magnesium silicate, activated carbon, silica gel, activated alumina, fullers earth, activated bleaching clay, activated bauxite, French chalk or r the like.
  • the filler may be a substance such as asbestos powder, mica, sand, rotten stone, clay, brick dust, diatomaceous earth, talcum, slate powder, etc.
  • the filler is an abrasive material and the final product is adapted to use as an abrading or polishing device.
  • Any of the abrasives in common use may be used, including silicon carbide, boron carbide, fused aluminum oxide, fiint, pumice, Carborundum, emery, rouge, and similar materials.
  • the size of the abrasive particles may vary from the finest polishing or bufiing powder to the coarser grit sizes used in grinding.
  • the cotton fibers having the cellulose ester adhered to their surfaces may be obtained by drying the cotton batting used in filtering the cellulose ester after it has become clogged and useless as a filter, and then grinding, shredding or cutting the batting to produce a mass of loose cotton fibers the surfaces of which are coated with the ester or which have particles or discrete deposits of the cellulose ester firmly adhered to their surfaces.
  • the filler particles and fibers may be commingled and formed into shaped articles in any suitable manner.
  • the fibers and filler particles may be commingled by blowing them with air or any other gaseous or vaporous but preferably gaseous medium into a common mixing The choice of the thermo- 5. and depositing chamber, and permitting the thus freely intermixed fibers and particles of filler to settle out on a collecting device.
  • the product After association of the fibers and non-fibrous filler particles and collection of the mixture, the product is compacted and the cellulose ester adhering to the surfaces of the cotton fibers, as well as any fibers of the potentially adhesive type present in the mixture, are activated by heat or solvent to effect a firm binding of the fibers and filler particles.
  • the activated ester film or deposits on the surfaces of the cotton fibers, and any activated fibers present are deactivated to non-adhesive condition to fix the fibers and filler particles in the new relationship. If activation has been accomplished by heat, deactivation may be effected by heating for a prolonged period or by cooling. If activation is by means of a solvent for the cellulose ester, for instance acetone in the case of cellulose acetate, deactivation may involve extraction of the solvent as by washing, evaporation, or decomposition.
  • the product comprises the filler particles, the cotton fibers carrying the adhered cellulose ester, and a thermosetting resin of the type of melamine-formaldehyde and phenolformaldehyde resins
  • the presently preferred procedure is to first thoroughly wet the filler particles with a solution of the thermosetting resin-forming constituents or with the liquid resin precondensate, in a Hobart mixer, and then slowly add the fibers carrying the cellulose ester or a mixture of such fibers with not more than 50% by weight of other fibers to the wet particles, with mixing.
  • the short fibers tend to curl around the resin-treated filler particles and cling to the surfaces of the particles.
  • the fibers, filler particles and thermosetting resin are uniformly distributed through the resulting mass which is then compacted under heat and pressure to the desired shape.
  • the mass may be shaped to the desired form in any suitable manner.
  • the mixture of fibers and filler particles may be introduced into a stationary mold of the desired shape and subjected to heat and pressure in the mold, or it may be continuously forced through a heated extrusion device to produce rods and tubes having any desired cross-section, for example, circular or oval.
  • the mass obtained by grinding the cotton batting impregnated or saturated with the cellulose ester may comprise loose discreteparticles of the ester which may be present in the ground material mixed with the filler particles. Any such discrete fragments of the cellulose ester in the mass molded are activated during the molding step. The activated cellulose ester blinds fibers in the product Wherever the ester occurs in it. The products are cooled in or after removal from the mold to deactivate the ester and fix the bonded fibers and filler particles in the bonded relation.
  • thermosetting resin constituents if present in the mass molded, are further reacted during the molding step with setting up of the resin which flows to form a film around and between the fibers and filler particles, which film increases the strength of the product.
  • Molded articles comprising the thermosetting resin may be baked at elevated temperatures to fix the resin in the thermoset condition and drive off any water or volatile substances present in the products, the baking being performed at temperatures below the molding temperature.
  • the present invention may be adapted to the produc-- tion of compacted fibrous structures comprising particles of filling material and discontinuous fibers of any suitable length.
  • the fibers are short, of the order of one-half to one millimeter in length.
  • the cotton batting may be ground (shredded, cut or otherwise broken up) to obtain fibers having aj length in the preferred range and having the cellulose ester adhered to their surfaces as a coating or film, or in the form of discrete particles.
  • a reinforcing fabric is associated with the molded fibrous article. comprising the discontinuous fibers and filler particles, a fabric, and preferably a woven fabric, comprising a thermoplastic resin or a thermosetting resin in the thermoplastic state being placed over the mass of fibers and filler particles inthe mold and bonded to the. mass during the molding operation.
  • Fabric woven'of nylon yarns maybe molded with the mass and bonded to it.
  • the nylon fabric may be coated with a solution of the constituents of a thermosetting resin, or with a partially condensed thermosetting resin, the constituents of the thermosetting resin being reacted while the fabric is in contact with the, mass of discontinuous fibers and particulate filler.
  • the fabric need not be woven or otherwise fabricated from yarns I of a thermoplastic resin, since fabrics formed from other types of yarns may be coated or impregnated with a thermoplastic resin or with the constituents of the thermosetting resinand molded with the mass of discontinuous fibers and filler particles.
  • the invention is particularly adapted to the production of various types of abrasive and polishing devices suitable for abrading purposes, including grinding and polishing wheels, abrasive disks, sanding and polishing belts, blocks, pads, and other shapes.
  • prising the cotton fibers having cellulose acetate adhered to their surfaces, and in which fibers'are bonded together, may be cut into squares or sections of any shape to be used in a manner similar to sand-paper or emery cloth, or they may be cut into narrow strips for various purposes.
  • matsor bats, orsegments thereof may be glued or otherwise attached to a hand block or the like.
  • Short lengths or pieces of the abrasive mats may be placed in a tumbling barrel with articles I. a 6 provides abrasiveand other molded, devices which exhibit excellent mechanical and impactst'rength, at compara- V tively little expense.
  • Example I Q l A molding masscomprising, on the weight of the mass, of cotton :fibers having a'length'of about one-half millimeter and the surfaces of which carrieda film or discrete particles of'cellulose acetate (obtainediby dry'.- ing and grinding acotton batting which had been used r to filter a secondary cellulose acetate dope andwhich was saturated with the dope), 65%1of abrasive grit, and 10% of a phenol-formaldehyde resin precondensa'te was obtainedfas follows: 1 I
  • The'abrasive particles were placed in a Hobart mi'xer An aqueous solution of the liquid resin precon densate containing 85% solids was added. Afterfthorough mix-" ing to wet' the surfaces; of theabrasive particles withthe resin, the cotton fibers having cellulose acetate adhered Mats or bats cornto their surfaces were added slowly and thoroughly mixed with, the abrasive. The'mass" was thenplaced'in'the V cavity of the female member ofa' mold 'providedwith a centrally disposed projection and of the typefcommonly.
  • particulate-filling mate- 0 rials of other kinds may be mixed with the fibers and molded to obtain products' having characteristics which adapt them to special uses. For example, molded devices such as washers, caster wheels, Wheels for vacuum cleaners, carpet sweepers or the like may be obtained.
  • the use of graphite or similar lubricious types of filler particles results in products which are useful as oilless" bearings, washers, packings, etc;
  • the product preferably comprises the thermosetting resin.
  • the proportion of cotton fibers having the cellulose ester adhered to theirsurfaces in the product may vary but is usually between 5 and preferably about.25% by weight. varied depending upon the type of filler selected and the intended uses of the product, butis usually between 50 and 95% preferably about 65% by weight, when the product consists of the cotton fibers carrying the cellulose ester on their surfaces and the filler.
  • the product comprises a thermosetting resin
  • the resin may be present in an amount between 5 and 15% by weight.
  • Example 11 A molding mass comprising,--on the weight of the i mass, 20% of cottonifibers'about /2 min. long and .hav-
  • the abrasive grit was thoroughly mixedwith an aqueous solution of the resin precondensate containing 70% polymer fibers were added. After thorough mixing, the mass was molded to obtain 'a Wheel which was baked in a hot air oven, all as in -Example I.
  • the proportion of filler particles may be lose acetate-impregnated cotton batting filter, to'obtain a loosernassof fibers having a length of about 1 mm;
  • a method of making a felt-like, compacted fibrous product which comprises wetting particles of a nonfibrous filler material with a liquid comprising a precondensate of a thermosetting resin, associating the Wet filler particles with discontinuous cotton fibers having a non-fibrous cellulose organic acid ester adhered to their surfaces, heating the mass of fibers and filler particles to a temperature at which the cellulose ester is rendered adhesive, subjecting the mass to pressure while the ester is in the adhesive condition to obtain a product in which fibers are bonded together by the ester and in which the filler particles are fixed in a condition of substantially uniform distribution by the bonded fibers and by the resin, cooling the product, and heating the product at a temperature below the temperature at which the ester is rendered adhesive to convert the resin to insoluble, thermoset condition.
  • thermosetting resin is a melamine-formaldehyde resin.
  • a felt-like, compacted fibrous abrasive wheel comprising 50% to 95% by weight of abrasive particles
  • thermosetting resin in the thermoset condition in contact with the abrasive particles, the fibers being bonded together, at least some of the fibers being bonded together by the cellulose ester adhering to their surfaces, and the abrasive particles being fixed in a condition of substantially uniform distribution throughout the wheel by the bonded fibers and by the thermoset resin.
  • thermosetting resin is a phenol-formaldehyde resin.
  • thermosetting resin is a melamine-formaldehyde resin.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
US252792A 1951-10-23 1951-10-23 Abrasive articles and method of making Expired - Lifetime US2711365A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL81798D NL81798C (enrdf_load_stackoverflow) 1951-10-23
US252792A US2711365A (en) 1951-10-23 1951-10-23 Abrasive articles and method of making
US306061A US2781326A (en) 1951-10-23 1952-08-23 Molding composition
GB25854/52A GB732257A (en) 1951-10-23 1952-10-15 Synthetic resin molding composition and molded articles
FR1071151D FR1071151A (fr) 1951-10-23 1952-10-21 Composition de moulage et produits obtenus
DEA16726A DE1085664B (de) 1951-10-23 1952-10-23 Kunstharzpressmischungen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US252792A US2711365A (en) 1951-10-23 1951-10-23 Abrasive articles and method of making
US306061A US2781326A (en) 1951-10-23 1952-08-23 Molding composition

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US2711365A true US2711365A (en) 1955-06-21

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US252792A Expired - Lifetime US2711365A (en) 1951-10-23 1951-10-23 Abrasive articles and method of making
US306061A Expired - Lifetime US2781326A (en) 1951-10-23 1952-08-23 Molding composition

Family Applications After (1)

Application Number Title Priority Date Filing Date
US306061A Expired - Lifetime US2781326A (en) 1951-10-23 1952-08-23 Molding composition

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US (2) US2711365A (enrdf_load_stackoverflow)
DE (1) DE1085664B (enrdf_load_stackoverflow)
FR (1) FR1071151A (enrdf_load_stackoverflow)
GB (1) GB732257A (enrdf_load_stackoverflow)
NL (1) NL81798C (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880080A (en) * 1955-11-07 1959-03-31 Minnesota Mining & Mfg Reinforced abrasive articles and intermediate products
US2920947A (en) * 1956-11-13 1960-01-12 Du Pont Bristles for abrading surfaces
US3026190A (en) * 1958-12-02 1962-03-20 American Viscose Corp Elastomer bonded abrasives
US3102011A (en) * 1959-12-21 1963-08-27 Conversion Chem Corp Tumbling chips
US3135590A (en) * 1957-07-12 1964-06-02 Norton Co Dimensionally stabilized paper and coated abrasives made therefrom
US3607354A (en) * 1969-11-14 1971-09-21 Minnesota Mining & Mfg Method of delustering polyethylene terephthalate film
US20080072500A1 (en) * 2006-09-15 2008-03-27 Klett Michael W Microfiber reinforcement for abrasive tools
US20120100784A1 (en) * 2006-09-15 2012-04-26 Saint-Gobain Abrasifs Microfiber Reinforcement for Abrasive Tools

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US2985613A (en) * 1956-05-10 1961-05-23 Port Oils Inc X Resinous compositions and objects having controlled uhf characteristics
FR2698289B1 (fr) * 1992-11-20 1995-01-27 Airsec Ind Sa Matières déshydratantes à base de polymères.
US7335422B2 (en) * 2002-04-25 2008-02-26 Sud-Chemie Inc. Absorbent polymeric material
US7389877B2 (en) * 2000-08-28 2008-06-24 Sud-Chemie Inc. Apparatus for packaging electronic components including a reel entrained with desiccating material
US20070029400A1 (en) * 2002-04-25 2007-02-08 Sud-Chemie Inc. Scented pharmaceutical or neutraceutical vessel
US20080017528A1 (en) * 2002-04-25 2008-01-24 Sud-Chemie Inc. Scented container with moisture control capacity
EP2142444A1 (en) * 2007-05-07 2010-01-13 Airsec Release agent for scented additives
MX2010002532A (es) 2007-09-21 2010-07-02 Saint Gobain Abrasives Inc Formulacion de resina fenolica y revestimientos para productos abrasivos.
EP2096135B1 (en) * 2008-02-27 2012-07-04 Airsec Foamable polymer preparations and compositions comprising a foamed polymer and having high and rapid water absorption
JP6940162B2 (ja) * 2016-06-17 2021-09-22 日本電気株式会社 セルロース系樹脂組成物、成形体及びこれを用いた製品
US11149133B2 (en) * 2016-06-17 2021-10-19 Nec Corporation Cellulose resin composition, molded body and product using same
CN116038582A (zh) * 2022-11-28 2023-05-02 武汉材料保护研究所有限公司 一种树脂基砂轮用自润滑复合填料及其制备方法

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US2404207A (en) * 1940-06-29 1946-07-16 United Cotton Products Company Abrasive belt
US2432091A (en) * 1947-12-09 Method of making cleansing pads
US2483406A (en) * 1943-11-20 1949-10-04 American Viscose Corp Process and apparatus for producing fibrous materials
US2527628A (en) * 1944-09-16 1950-10-31 American Viscose Corp Process for producing a matrix containing particulate fillers
US2543101A (en) * 1944-07-20 1951-02-27 American Viscose Corp Composite fibrous products and method of making them

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US2072902A (en) * 1934-11-10 1937-03-09 Celanese Corp Manufacture of compositions of matter containing synthetic resins
US2169392A (en) * 1937-05-01 1939-08-15 Rohm & Haas Process for the production of cellulosic textile fabric
CH236237A (de) * 1941-03-01 1945-01-31 Inst Kunststoffe Und Anstrichf Kunstharzpressmischung und Verfahren zur Herstellung derselben.
GB588025A (en) * 1944-01-26 1947-05-12 Ici Ltd Improvements in or relating to modified nitrocellulose coating compositions and fabrics coated therewith
US2529282A (en) * 1946-10-09 1950-11-07 Hercules Powder Co Ltd Phonograph record
US2494513A (en) * 1947-08-27 1950-01-10 Dow Chemical Co Surface treated ethylcellulose articles and process of making same
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US2432091A (en) * 1947-12-09 Method of making cleansing pads
US2404207A (en) * 1940-06-29 1946-07-16 United Cotton Products Company Abrasive belt
US2398408A (en) * 1943-08-25 1946-04-16 Carborundum Co Abrasive article
US2483406A (en) * 1943-11-20 1949-10-04 American Viscose Corp Process and apparatus for producing fibrous materials
US2543101A (en) * 1944-07-20 1951-02-27 American Viscose Corp Composite fibrous products and method of making them
US2527628A (en) * 1944-09-16 1950-10-31 American Viscose Corp Process for producing a matrix containing particulate fillers

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880080A (en) * 1955-11-07 1959-03-31 Minnesota Mining & Mfg Reinforced abrasive articles and intermediate products
US2920947A (en) * 1956-11-13 1960-01-12 Du Pont Bristles for abrading surfaces
US3135590A (en) * 1957-07-12 1964-06-02 Norton Co Dimensionally stabilized paper and coated abrasives made therefrom
US3026190A (en) * 1958-12-02 1962-03-20 American Viscose Corp Elastomer bonded abrasives
US3102011A (en) * 1959-12-21 1963-08-27 Conversion Chem Corp Tumbling chips
US3607354A (en) * 1969-11-14 1971-09-21 Minnesota Mining & Mfg Method of delustering polyethylene terephthalate film
US20080072500A1 (en) * 2006-09-15 2008-03-27 Klett Michael W Microfiber reinforcement for abrasive tools
US20120100784A1 (en) * 2006-09-15 2012-04-26 Saint-Gobain Abrasifs Microfiber Reinforcement for Abrasive Tools
US8808412B2 (en) 2006-09-15 2014-08-19 Saint-Gobain Abrasives, Inc. Microfiber reinforcement for abrasive tools
US9586307B2 (en) 2006-09-15 2017-03-07 Saint-Gobain Abrasives, Inc. Microfiber reinforcement for abrasive tools

Also Published As

Publication number Publication date
US2781326A (en) 1957-02-12
NL81798C (enrdf_load_stackoverflow)
FR1071151A (fr) 1954-08-26
GB732257A (en) 1955-06-22
DE1085664B (de) 1960-07-21

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